|Mrs. Irene Walsh|
|Name||Mrs. Irene Walsh|
|Vehicles and/or Gadgets||None|
|Residence||Astoria, Oregon (The Walsh Residence)|
Irene Walsh is the mother of Brand and Mikey with an odd habit of mispronouncing words ("Don't you come home without your brother, or I'll commit Hare Krishna!") and it is apparent that Mikey inherits this from her. In the events surrounding the eviction of her home, her right arm got caught in a spin dryer and ended up in a sling, giving her the opportunity to hire a Spanish maid named Rosalita. When Mikey and his friends went in search of One-Eyed Willy's treasure, she was too distressed to notice until too late that Brand had been tied up and when she did, she sent the young man after him, threatening to commit suicide should Brand come home without Mikey. In the end, she was reunited with both her boys and celebrated the salvation of the Goon Docks with her husband only after Rosalita found the jewels in her younger son's marble bag.
- In the film, she is portrayed by Mary Ellen Trainor, who passed away in 2015.
- In Lego Dimensions she is voiced by a currently unknown actress.